package com.lwt.monstermall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.lwt.monstermall.common.constant.ProductConstant;
import com.lwt.monstermall.common.to.SkuHasStockTo;
import com.lwt.monstermall.common.to.SkuReductionTo;
import com.lwt.monstermall.common.to.SpuBoundTo;
import com.lwt.monstermall.common.to.es.SkuEsModel;
import com.lwt.monstermall.common.utils.PageUtils;
import com.lwt.monstermall.common.utils.Query;
import com.lwt.monstermall.common.utils.R;
import com.lwt.monstermall.product.dao.SpuInfoDao;
import com.lwt.monstermall.product.entity.*;
import com.lwt.monstermall.product.feign.CouponFeignService;
import com.lwt.monstermall.product.feign.SearchFeignService;
import com.lwt.monstermall.product.feign.WareFeignService;
import com.lwt.monstermall.product.service.*;
import com.lwt.monstermall.product.vo.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService imagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService attrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * //TODO 高级部分再来完善
     * @param vo
     */
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {

        //1.保存spu基本信息
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo,infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);

        //2.保存Spu的描述图片
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",",decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3.保存spu的图片集
        List<String> images = vo.getImages();
        imagesService.saveImages(infoEntity.getId(),images);

        //4.保存Spu的规格参数，pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(item -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(item.getAttrId());
            AttrEntity byId = attrService.getById(item.getAttrId());
            valueEntity.setAttrName(byId.getAttrName());
            valueEntity.setAttrValue(item.getAttrValues());
            valueEntity.setQuickShow(item.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());

            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);

        //保存spu的积分信息
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds,spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() !=0){
            log.error("远程保存spu信息失败");
        }

        //5.保存当前spu对应的所有sku信息
        List<Skus> skus = vo.getSkus();
        if (skus!=null && skus.size()>0){
            skus.forEach(item->{
                String defaultImg = "";
                for (Images img : item.getImages()) {
                    if (img.getDefaultImg()==1){
                        defaultImg = img.getImgUrl();
                    }
                }
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);

                //5.1）sku的基本信息：pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();


                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity->{
                    //返回true就是需要，返回false会被过滤掉
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                //5.2）sku的图片信息：pms_sku_images
                //TODO 没有图片路径的无需保存
                skuImagesService.saveBatch(imagesEntities);

                //5.3）sku的销售属性信息
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                //5.4）sku的优惠满减信息：mall_sms->sms_sku_ladder\sms_sku_full_reduction\sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item,skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount()<=0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0"))==1){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0){
                        log.error("远程保存sku优惠信息失败");
                    }
                }
            });
        }
    }

    /**
     *    key: '华为',//检索关键字
     *    catelogId: 6,//三级分类id
     *    brandId: 1,//品牌id
     *    status: 0,//商品状态
     * @param infoEntity
     */

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            wrapper.and(w->{
                w.eq("id",key).or().like("spu_name",key);
            });
        }

        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status",status);
        }

        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId)){
            wrapper.eq("brand_id",brandId);
        }

        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    /**
     * 商品上架
     * @param spuId
     */
    @Override
    public void up(Long spuId) {
        ArrayList<SkuEsModel> skuEsModes = new ArrayList<>();
        //1.查出当前spuid对应的所有信息
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);

        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        // attrs
        //TODO 4.查询当前sku的所有可以检索属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrListForSpu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrs(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrIds);

        ArrayList<SkuEsModel.Attr> attrs = new ArrayList<>();
        List<SkuEsModel.Attr> attrList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attr attr = new SkuEsModel.Attr();
            BeanUtils.copyProperties(item, attr);
            return attr;
        }).collect(Collectors.toList());

        //hasStock
        //TODO 1.发送远程调用，查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try {
            List<SkuHasStockTo> skuHasStock = wareFeignService.getSkuHasStock(skuIdList);
            stockMap = skuHasStock.stream().collect(Collectors.toMap(SkuHasStockTo::getSkuId, item -> item.getHasStock()));
        }catch (Exception e){
            log.error("库存服务查询异常:原因{}",e);
        }

        //2.封装每个sku信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> collect = skus.stream().map(sku -> {
            SkuEsModel esMode = new SkuEsModel();
            BeanUtils.copyProperties(sku,esMode);

            //skuPrice,skuImg,
            esMode.setSkuPrice(sku.getPrice());
            esMode.setSkuImg(sku.getSkuDefaultImg());

            //设置库存信息
            //hasStock
            if (finalStockMap == null){
                esMode.setHasStock(true);
            }else {
                esMode.setHasStock(finalStockMap.get(sku.getSkuId()));
            }

            //hotScore
            //TODO 2.热度评分 0
            esMode.setHotScore(0L);

            //brandName , brandIm，catalogName
            //TODO 3.查询品牌和分类信息
            BrandEntity byId = brandService.getById(esMode.getBrandId());
            esMode.setBrandName(byId.getName());
            esMode.setBrandImg(byId.getLogo());
            CategoryEntity category = categoryService.getById(esMode.getCatalogId());
            esMode.setCatalogName(category.getName());

            //设置检索属性
            esMode.setAttrs(attrList);

            return esMode;
        }).collect(Collectors.toList());

        //TODO 5.将数据发送给es进行保存：mall-search
        R r = searchFeignService.productStatusUp(collect);
        if (r.getCode() == 0){
            //远程调用成功
            //TODO 修改spu的状态
            this.baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else {
            //远程调用失败
            //TODO 7.重复调用的问题？接口幂等性重试机制
            //feign的调用流程
            /**
             * 1.构造请求数据，将对象转为json
             * 2.发送请求执行
             */
        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {

        SkuInfoEntity byId = skuInfoService.getById(skuId);
        Long spuId = byId.getSpuId();
        SpuInfoEntity spu = getById(spuId);
        return spu;
    }
}